While caring for an 18 month old male with a diagnosis of kawasaki disease, which of the following would be an indication of deterioration?

A. Cardiac arrhythmias can occur in Kawasaki disease, but they are not necessarily an indication of deterioration unless associated with significant clinical change. B. Strep throat is unrelated to the progression of Kawasaki disease, though infection could complicate it. C. Hypotension is a significant indicator of deterioration in Kawasaki disease, especially as it can signal cardiac involvement or shock. D. Bradycardia is typically not a sign of deterioration in this condition, and it would need further evaluation.